Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02396126 2007-10-10
UNIVERSAL MEASURING SCRIBER
BACKGROUND OF THE INVENTION
[oool] The present invention generally relates to scribers, markers, and
calipers used mainly
by tool, die and mold makers, machine operators, craftsmen, mechanics,
technicians,
etc. for marking, scribing, dividing, and transferring. More particularly, the
present
invention relates to a measuring scriber that allows a reference point or line
to be
simultaneously measured and marked in relation to a flat or raised reference
edge
which may be straight or curved.
[00021 Numerous tools and instruments have been used for measuring, marking,
and scribing
during woodwork, carpet and tile work, as well as machine work. Most of these
instruments consist of an alignment block or point of some kind, a scribing
blade or pin,
and possibly a measuring device.
poosl U.S. Pat. No. 4,590,677 issued on May 27, 1986 to Paul J. Kopp is an
alignment gauge
for scriber tool. It consists of a body with a scribing pin on one end and an
adjustable
alignment block. The scribing pin is secured with a screw. The pin requires a
surface
grinder and a special attachment for sharpening. The desired measurement is
done
with a separate device and errors are inherent. This device is unable to trace
or mark
a curved edge or a straight raised edge, draw a partial or full circle from a
set point. It
has no division capabilities. It appears to be uncomfortable to use, lacks a
measuring
device and most importantly it lacks consistency and accuracy.
pom U.S. Pat. No. 3,871,100 issued on Mar. 18, 1975 to William J. Hildebrandt
discloses a
marking gauge. It allows tracing of a straight edge only. Although it includes
a
measuring device, its accuracy is comparable to that of a regular ruler and
does not
allow precise measuring required in most machine work.
poom A variable width scriber, U.S. Pat. No. 3,805,391 issued to Roger D.
Glasgow on Apr.
23, 1974, consists of a scribing pin placed eccentrically in a circle. It
allows tracing
away from an edge by setting the distance based on the circles contact point
with the
edge. It allows tracing a raised edge only at only several preset distances
and has very
poor measuring accuracy and consistency-even for woodworking jobs, where
accuracy
need not be high.
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[oo0s1 U.S. Pat. Des. No. 280,493, issued on Sep. 10, 1985 to Howard B.
Johnson, is a
scriber tool consisting of two arms attached at one end and with a scribing
pin on the
other end. It allows transferring a distance, measured by another device, to
be marked
from a point only. It can not trace an edge of any kind, nor does it have a
measuring
device.
[0007] Yet another device, U.S. Pat. No. 3,744,136 issued on Jul. 10, 1973 to
John R. Henke,
is an accessory for converting an ordinary pair of vernier or dial calipers
into a vertical
height measuring instrument. This device is an accessory, not a caliper, that
can be
converted to a scribing instrument, but it is limited to a fixed position on a
flat surface
and to vertical measurements and vertical gauge scribing.
[0008] Accordingly, there is a continuing need for a measuring scriber that
allows one to
measure and trace from a straight or curved edge, that may be raised. The
measuring
scriber should also have the ability to measure from a point. The present
invention
fulfills these needs, and provides other related advantages.
SUMMARY OF THE INVENTION
[ooos] The present invention resides in a portable measuring and scribing
instrument that can
be used in a variety of positions, including vertical and horizontal
positions, which
includes of several end attachments adaptable to multiple surfaces, including
straight
surfaces, curved surfaces, raised surfaces, edges, and vertical and horizontal
surfaces.
[oolo] The measuring scriber instrument generally comprises a base having a
channel. A first
scribe blade or needle extends from the base. A bar is slidably disposed
within the
channel. The bar includes a jaw mounted on one end thereof, and a second
scribe or
needle extending from the jaw.
[ool 1] An alignment block is attached to the base, the alignment block having
a straight or flat
outer surface for contacting a straight reference edge, and a curved outer
surface for
contacting a curved reference edge. A measurement device is attached to the
base so
that a reference point or line can be simultaneously measured and marked in
relation to
a flat or raised reference edge.
[00121 Typically, a pin extends from the jaw generally parallel to the first
scribe blade or needle
for measuring and marking a point on a object on which it is placed. The
measuring
device may also include an alignment pad clamped onto the jaw.
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[0013] The first and second scribe blades include a dominant straight edge
bordered by at
least one radial edge that can be ground to sharpen the scribe blade without
altering
the accuracy of the instrument. Preferably, the measuring scriber includes a
removable
cover disposed over either the first or second scribe blade or needle.
[0014] In one embodiment, parallel plates are attached to the base and
overlying the channel
for retaining the bar within the channel. The parallel plates include markings
for
measuring. Markings are also formed on an upper surface of the bar which
cooperate
with the parallel plate markings to form a vernier measuring device. In such
embodiment, the alignment block may be movable between horizontal and vertical
orientations relative to the bar. In alternate embodiments, the measuring
device
comprises a dial measuring device, or a digital measuring device attached to
the base.
[ools] The universal measuring scribers of the present invention allow a user
to trace from a
straight or curved edge, or raised surface. Measurements can also be taken
from a
point. As the invention enables the measurement and marking simultaneously,
the
errors caused when using multiple instruments is eliminated.
[0016] Other features and advantages of the present invention will become
apparent from the
following more detailed description, taken in conjunction with the
accompanying
drawings, which illustrate, by way of example, the principles of the
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings illustrate the invention. In such drawings:
[0018] FIG. 1 is a partially fragmented top plan view of a measuring scriber
embodying the
present invention;
[0019] FIG. 2 is a top plan view of a dial measuring scriber embodying the
present invention;
[002o] FIG. 3 is a top plan view of a digital measuring scriber embodying the
present invention;
[0021] FIG. 4 is a top plan view of the vernier measuring scriber similar to
FIG. 1;
[0022] FIG. 4A is a partially sectioned side view of the measuring scriber of
FIG. 1;
[0023] FIG. 4B is a side elevational view of FIG. 4, illustrating an alignment
block in a generally
horizontal position;
[0024] FIG. 4C is another side elevational view, similar to FIG. 4B;
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4' [0025] FIG. 4D is a side elevational view of the measuring scriber of FIG.
4, illustrating the
alignment block in a vertical orientation;
[0026] FIGS. 5-5D illustrate the vernier measuring scriber in views similar to
FIGS. 4-4D, but
having a round scribing needle instead of a scribing blade;
[0027] FIG. 6 is a top plan view of a dial measuring scriber, similar to FIG.
2;
[0028] FIG. 6A is a side elevational view of the measuring scriber of FIG. 6;
[0029] FIGS. 6B-6D are partially sectioned side elevational view of the
measuring scriber of
FIG. 6, illustrating various shaped alignment blocks incorporated therein;
[003o] FIG. 7 is a top plan view of a digital measuring scriber, similar to
FIG. 3;
[0031] FIG. 7A is a partially sectioned side elevational view of the measuring
scriber of FIG. 7;
[0032] FIGS. 7B-7D are partially sectioned side elevational views of the
measuring scriber of
FIG. 7, illustrating various alignment blocks incorporated therein;
[0033] FIG. 8 is a top view of a bar utilized in accordance with the present
invention;
[0034] FIG. 9 is a top view of a base utilized in accordance with the present
invention;
[0035] FIG. 9A is an end view of the base of FIG. 9, illustrating an open-
faced channel thereof;
[0036] FIGS. 10-12 are top views of scribing blades and needles used in
accordance with the
present invention;
[0037] FIGS. 13 and 13A are top and end views of an alignment pad having a
radial working
surface for a vernier measuring scriber embodying the present invention;
[0038] FIGS. 14 and 14A are top and end views of another alignment pad having
straight or
flat working surfaces;
[0039] FIGS. 15 and 15A are top and end views of yet another alignment pad
having a radial
outer working surface, and a rectangular shank for dial and digital measuring
scribers
embodying the present invention;
[oo4o] FIGS. 16 and 16A are top and end view of an adapter plate for using a
round needle
scriber in accordance with the present invention;
[0041] FIG. 17 is a top view of a center pin used in accordance with the
present invention;
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[0042] FIG. 18 is a top view of a closing plate utilized in accordance with
the present invention;
[0043] FIGS. 19-19B illustrate an alignment block utilized in a vernier
measuring scriber
embodying the present invention, and having flat and curved outer surfaces;
[0044] FIG. 20 is a cross-sectional view of an alignment block having a
straight outer surface
for dial and digital measuring scribers embodying the present invention;
[0045] FIG. 21 is a cross-sectional view of another alignment block having
radial outer
surfaces for dial and digital measuring scribers embodying the present
invention;
[0046] FIG. 21A is an end view of the alignment block of FIG. 21;
[0047] FIGS. 22 and 23 are bolts used in accordance with the present
invention;
[0048] FIG. 24 is a partially fragmented side elevational view of a dial
measuring scriber
having a clamp, illustrated in FIG. 25, holding an alignment pad thereto;
[0049] FIG. 26 is a fragmented side elevational view of another dial measuring
scriber having
another clamp, illustrated in FIGS. 27 and 27A, attaching another alignment
block
thereto;
[005o] FIG. 28 is a top view of a vernier measuring scriber embodying the
present invention
having a scriber protective casing, illustrated in FIGS. 30 and 30A, covering
a scribing
needle thereof;
[0051] FIG. 29 is a cross-sectional view taken generally along line A--A of
FIG. 28;
[0052] FIG. 31 is a top view of a vernier measuring scriber embodying the
present invention;
[0053] FIG. 32 is a perspective view of the measuring scriber of FIG. 31
measuring and
marking reference lines utilizing components and area referred to by "D" of
FIG. 31;
[0054] FIG. 33 is a perspective view of the measuring scriber of FIG. 31
measuring and
marking along a raised curved surface, utilizing components and area "E" of
FIG. 31;
[0055] FIG. 34 is a perspective view of the measuring scriber of FIG. 31
measuring and
marking an object utilizing the "D" area and components of FIG. 31;
[oo56] FIG. 35 is a perspective view of the measuring scriber of FIG. 32
measuring and
marking a straight reference line in relation to a straight raised surface,
utilizing the
components and area designated "E" in FIG. 31;
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[0057] FIG. 36 is a top view of a particularly preferred scribing blade
utilized in accordance
with the present invention;
[0058] FIG. 37 is a perspective view of the measuring scriber of FIG. 31
measuring and
marking a line utilizing the "F" components and area of FIG. 31; and
[00591 FIGS. 38-40 are top views of several dial measuring scriber embodiments
having long
jaws embodying the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[006o] As shown in the accompanying drawings for purposes of illustration, the
present
invention resides in a measuring scriber, generally referred to by the
reference number
100 in FIGS. 1, 4-5D and 31-37; by the reference number 200 in FIGS. 2, 6-6D,
24, and
26; by the reference number 300 in FIGS. 3 and 7-7D. The measuring scribers
100-300
can be used by tool, die and mold makers, machine operators, craftsmen,
mechanics,
technicians, etc. for marking, scribing, dividing and transferring. Similar
structural
components between the various embodiments are labeled with the same or
similar
reference numbers.
[00611 With reference now to FIGS. 1 and 4-5D, a first particularly preferred
measuring scriber
100 is illustrated. The measuring scriber 100 includes a base 1 having an open-
faced
channel 16, as shown in FIGS. 9 and 9A, through which a bar 2 having a jaw 15
attached at one end thereof, as shown in FIG. 8, slides therethrough. Plates 8
are
attached to the base 1 so as to be disposed generally parallel to one another,
and
enclose the bar 2 within the channel 16. Markings 13 are formed on the bar 2,
which
cooperate and are read with markings 14 on the parallel plates 8 to form a
vernier-type
measuring scriber 100. The markings 13 and 14 can be in millimeters,
thousandths of
an inch, etc. to meet the needs of the user.
[0062] A scriber blade or needle 3 extends from the base 1. A second scriber
blade or needle
3 extends generally opposite the first blade 3' from the jaw 15. A center pin
6 extends
from an opposite side of the jaw 15 so as to be generally parallel to the
first scriber
blade or needle 3'. As will be more fully described herein, the scriber blades
3 and pin
6 are used to form reference markings and the like. As illustrated in FIGS. 10-
12, such
markings can be made with either a scriber blade 3 or 3A or a round needle 3B.
The
scriber blade 3 or 3A can be replaced with a round needle 3B utilizing a
holder-profile
plate 12, illustrated in FIGS. 16 and 16A, which holds the smaller round
needle 3B in
place.
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[0063] In order to retain the accuracy and consistency of the measurement
markings, the
blades 3 and 3A include a straight and flat blade end 17 having a semi-
circular or
beveled face 18 extending therefrom. It will be appreciated by one skilled in
the art that
such face 18 can be ground by a grinder to sharpen the edge 17 without
altering the
consistency and accuracy of the measuring scriber 100-300. Thus, as
illustrated in
FIG. 36, sharpening of the scribing blades 3 and 3' with a trapezoid,
triangular or
semi-circular grinding face can be performed on a regular grinder. The area 18
or B in
FIG. 36, is ground down while the edge 17, marked A in FIG. 36, is kept
constant. As
a result, the accuracy of all marks made by the scribing blades 3 and 3' is
kept after
sharpening the blades 3 and 3' on a regular grinder. In contrast, for the
needle scriber
3B, a surface grinder with a center round attachment is needed for sharpening
in order
to preserve the accuracy of the marks.
[oo6a] Alignment block 4 has four working side surfaces, at least one being
straight or flat, and
the other contoured, typically round or curved. The distance from the center
of a
tightening screw 19 to each working surface is intended to be exactly equal.
This
accuracy is assured by a tooth on the base 1 which slides in the grooves 20 of
the
alignment block 4. The outside surfaces of the alignment block 4 are intended
to come
into contact with a reference edge or surface to assist in measuring and
marking using
the measuring scriber 100, as will be described more fully herein. An
alignment pad 5
is attached, via its shank, to the jaw 15 at the end of bar 2. The alignment
pad 5 has
either a straight or curved working surface, as illustrated in FIGS. 13-15A.
[0065] A center pin 6 is attached to the jaw 15, and oriented generally
parallel to blade 3'. The
pin is held in place by a holding bolt 9, illustrated in FIGS. 22 and 23, and
can be
adjustable in length. The center pin 6 is used to create measurement markings
from a
given point, as will be described more fully herein in relation to FIG. 37.
[0066] The alignment pad 5 can be adjustably held in place on the jaw 15 using
a clamp 10 or
11, as illustrated in FIGS. 24-27A. Also, a protective cover 7 may be
removably
attached over either scribing blade or needle 3 to protect the marking edge
thereof from
deformation, and surrounding objects from puncture or scratch as illustrated
in FIGS.
25-30A.
[0067] With reference now to FIGS. 2 and 6A-6D, a dial measuring device 20 may
be attached
to the base 1, and the bar 2 modified as necessary to cooperate with the dial
20 to
produce accurate measurements. The remaining components described above are
generally consistent with the first described embodiment. Thus, this
embodiment 200 is
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r
utilized in generally the same fashion as the "vernier-type" measuring scriber
100, as
will be more fully described herein.
possl FIGS. 38-40 illustrate a dial measuring scriber 200' having elongated
jaws which are
used in the manner described above for measuring and marking, but on a larger
scale.
[0069] Alternatively, the measuring device may comprise a digital measuring
device 21, as are
well known to one skilled in the art and generally illustrated in FIGS. 3, and
7-7D. Once
again, the bar 2 may be modified as necessary to cooperate with the digital
measuring
device 21 to produce the correct results. Although at greater expense to
manufacturer,
such digital measuring device 21 can provide very accurate measurements which
are
easy to read, and can include different functions to measure in millimeters or
inches.
[007ol Typically, the center pin 6 only includes a holder bolt 9 in the dial
and digital measuring
scribers 200 and 300. Also, clamps 10 and 11 which attach the alignment pad 5
to the
bar jaw 15 are usually only incorporated into the dial and digital measuring
scribers 200
and 300.
100711 With reference now to FIGS. 31-35, and 37, the manner of operation of
the measuring
scribers 100-300 will now be described. It will be noted by the reader that
the "operating
areas" D-F have been labeled on the illustrated "vernier" measuring scriber
100 to
assist the reader in understanding the components which participate during
each
function. Operational area "D" involves the use of the scribing blade 3 and
aiignment
block 4. As illustrated in FIG. 32, the alignment block 4 is placed adjacent
to an edge
of a flat surface and the desired distance, as measured by the measuring
device or
read with the markings 13 and 14 is marked using the scribing blade 3. If the
edge of
a flat surface is to be traced at a set distance, the alignment block 4 is
slid along the
reference surface edge, which can be straight, as illustrated in FIG. 32, or
curved as
illustrated in FIG. 34. Once again, the marking, or strike line, is made with
the scribing
blade 3 as the measuring scriber 100, and particularly the alignment block 4,
is moved
along the reference edge surface.
[00721 Operational area "E" involves the use of the second scribing blade 3'
extending from
the base 1. As illustrated in FIGS. 33 and 35, the alignment pad 5 is placed
in contact
with a raised reference edge of a flat surface, and a mark is made with the
scribing
blade 3' at a measured, desired distance. It will be noted that a curved or
straight raised
edge can be traced at a desired distance by sliding the alignment pad 5 along
generally
perpendicular to the edge while scribing a marking line with the scribing
blade 3' as
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shown. Of course, as appreciated by one skilled in the art, the desired
measured
distance is a distance between the alignment pad 5 and scribing blade 3'.
[00731 Operational area "F" involves the use of the scribing blade 3'
extending from the base
1 and the center pin 6, as illustrated in FIG. 37. With the center pin 6 at a
desired and
marked point, a measured distance can be marked from that point with the
scribing
blade 3' as shown. A full or partial circle can also be made with the center
pin 6 being
in the center of the desired circle. Multiple dividing marks can be made along
either a
straight or curved line using the above application as well. When setting the
desired
measurement to be marked, the distance between the center pin 6 and the
scribing
blade 3' of the measuring scriber 100, in the closed position, must be
accounted for.
This measurement is marked on the instrument.
[00741 Using the universal measuring scriber 100-300 of the present invention,
it is clear that
one can chose a desired distance with the precision of a caliper to a
thousandth of an
inch or tens of millimeters. Transfer of this measurement is not necessary, as
the
instrument of the present invention simultaneously measures and marks,
eliminating
any transfer errors and performing the task more quickly. Thus, increase speed
and
convenience are realized when measuring and marking distances, resulting in
greater
efficiency and productivity of work processes. The measuring scriber
instrument of the
present invention also has the capability of measuring and marking from a
variety of
different surfaces, such as a raised or a dropped, a straight or a curved
edge, as well
as a point on a flat surface. It can mark a desired point or trace an edge at
a chosen
distance. All of these functions are frequently needed during machine work,
tool or die
making, crafts working, etc. The universal measuring scriber of the present
invention
has the ability to perform all of these functions with precision and ease
utilizing a
hand-held and portable instrument as described above.
[0075] The design of the scribing blades 3 allows sharpening on a regular
grinder without
comprising the high accuracy of this instrument. This not only improves the
efficiency
and ease of use, but also eliminates the need for a surface grinder with a
rotating
attachment. Also, the design of the scriber blades 3 insures consistent
accuracy of the
scribing blade edge.
[0076] Although several embodiments of the present invention have been
described in detail
for purposes of illustration, various modifications of each may be made
without
departing from the spirit and scope of the invention. Accordingly, the
invention is not to
be limited, except as by the appended claims.
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